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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In one dimensional flow, the flow

Takes place in straight line
Takes place in curve
Takes place in one direction
Is steady and uniform

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant speed and capacity, the pressure and power vary

Directly as the air or gas density
Inversely as density
As square of density
Inversely as square root of density

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Hydraulics and Fluid Mechanics in ME
Two pipe systems can be said to be equivalent, when the following quantites are same

friction loss and flow
length and diameter
flow and length
friction factor and diameter

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Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)

(2/3) Cd × b × √(2gH)
(2/3) Cd × b × √(2g) × H
(2/3) Cd × b × √(2g) × H2
(2/3) Cd × b × √(2g) × H3/2

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Hydraulics and Fluid Mechanics in ME
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)

4flv²/2gd
3flv²/2gd
flv²/2gd
flv²/gd

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Hydraulics and Fluid Mechanics in ME
Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

Inversely proportional to N²
Inversely proportional to N
Directly proportional to N²
Directly proportional to N

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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